LM4041DEM3X-1.2

Voltage Reference Overview

The LM4041DEM3X-1.2 is a micropower shunt voltage reference manufactured by Texas Instruments, providing a fixed output of 1.225 V. It features an initial accuracy of ±1% at 25°C and a maximum temperature coefficient of 150 ppm/°C. The device operates within a current range of 73 µA to 12 mA and supports a maximum input voltage of 15 V. It is housed in a SOT-23-3 package with dimensions of 3.04 x 1.4 x 1.02 mm. The component functions reliably across an extended temperature range from -40°C to +125°C.

Voltage Reference Feature Summary

• Eliminates the need for external stabilizing capacitors while ensuring stability with any capacitive load
• Utilizes fuse and Zener-zap reverse breakdown voltage trim during wafer sort for high precision
• Bandgap reference temperature drift curvature correction ensures stable accuracy over wide operating ranges

Voltage Reference Applications

• Space-critical portable applications requiring sub-miniature surface-mount packages
• Power-restricted designs benefiting from ultra-low operating current
• Precision measurement systems requiring stable reference voltages under varying loads

Voltage Reference Procurement Notes

Verify the specific suffix 'DEM3X' against the manufacturer's official ordering guide to confirm the exact tolerance grade (D grade) and packaging configuration. Ensure the part number matches the required temperature range and initial accuracy specifications for the target application before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when a fixed 1.225 V reference is required in a compact SOT-23-3 footprint. It is suitable for designs prioritizing low power consumption and stability without external compensation components. Consider the ±1% initial accuracy and 150 ppm/°C temperature coefficient against stricter precision requirements that might necessitate A or B grade variants.

Voltage Reference Part Context

This part belongs to the LM4041-N family of precision micropower shunt voltage references. The family includes adjustable versions and various tolerance grades (A, B, C, D) available in SC-70 and SOT-23 packages. The LM4041 series is designed for applications demanding high stability and low noise in space-constrained environments.

Voltage Reference Replacement Considerations

LM4041DEM3-1.2/NOPB: Identical electrical specifications and package; verify if the '/NOPB' suffix denotes a specific lead-free or packaging update in the latest datasheet.

Voltage Reference FAQ

Does the LM4041DEM3X-1.2 require an external capacitor for stability?

No, the advanced design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load.

What is the minimum operating current for this device?

The minimum operating current is 73 µA for the LM4041-N 1.2 version.